acu.dk is a .dk domain served by 2 nameservers (drake.ns.cloudflare.com, sima.ns.cloudflare.com). It was registered on 25 August 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.65.175 is hosted by Cloudflare, Inc. (AS13335). The zone is of unknown DNSSEC status, has no DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 104.21.65.175 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.164.244 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::ac43:a4f4 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::6815:41af | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.65.175,172.67.164.244 ech=AEX+DQBBFwAgACCECNG9/7ci5q/ej1y1iWFpvxIKaEFRCwFaikXPk/xlaQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:a4f4,2606:4700:3035::6815:41af |
| www | 104.21.65.175 172.67.164.244 2606:4700:3032::ac43:a4f4 2606:4700:3035::6815:41af (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Check | Result |
|---|---|
| Validation Status | ❓ Unknown |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | broken trust chain resolving 'acu.dk/A/IN': 127.0.0.1#53 |
| Field | Value |
|---|---|
| Serial | 2410100797 |
| Primary NS (MNAME) | drake.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Obsidian Digital A/S |
| Registered | 2018-08-25 |
| Expires | 2027-08-31 (317d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-10 18:22:01 | 438ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-24 09:49:42 | 614ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-12 02:28:30 | 914ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-21 10:53:12 shown | 2035ms | 2 NS 2 A 0 MX | ❓ Unknown |
| 2026-06-20 16:38:40 | 528ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-16 12:42:33 | 422ms | 2 NS 2 A 0 MX | 🔓 Insecure |